Pin.



G. F. MARKHAM.

PIN.

APPLICATION FILED JAN. 6, 1912.

1,038,618. Patented Sept. 17,1912.

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CHARLES F. MARKHAM, 0F PROVIDENCE, RHODE ISLAND.

PIN.

Specification of Letters Patent. I Patented Sept. 1'7, 1912.

Application filed January 6, 1912. Serial No. 669,735.

To all whom it may concern Be it known thatI CHARLES F MARK- HAM, a citizen of the United States, and

resident of the city of Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Pins, of which the fol lowing is a specification.

This invention relates to pins of the class commonly known as cuff or beauty pins, and

has for its object to provide a pin of this character with a joint member formed 1ndependent of the front plate of the pin, and provided with a base plate supported against the inner surface of the front plate and retained in positionby rolling the edge of the front plate thereover.

A further object of' the invention is to curve the edges of the base plate of said member slightly upward from the plane thereof, so that said edges will interlock with the rolled edge of the front plate to firmly secure said member in position in the back of the front plate. Then again in rolling the edge of the front plate over the turned up edge of the base plate the pressure of the roll springs this edge downward and the natural resiliency of the metal also serves to assist in retaining the same in position.

With these and other objects in View, the invention consists of certain novel features of construction as will be more fully described and particularly pointed out in the appended claim.

'Of the accompanying drawing: Figure 1- is a central sectional side elevation of a pin of my improved construction. Fig. 2 illustrates an enlarged joint member with its underside left open to receive the ball head of the pin stem. Fig. 3- shows the lower portion of the joint member as partially closed which form it takes after having received the pin head. Fig. 4- is an enlarged plan view of the underside of a pin showing my improved construction of oint member connected to the body thereof by rolling the edges of the latter over those of the base plate of said member. Fig. 5- is a sectional elevation through the joint member on line 55 of Fig. 4. Fig. 6 is a sectional elevation on line 7-7 of Fig. 4 showing the roll as extending down over or beyond the turned up edge of the base plate.

Referring to the drawing 1 designates the body portion or front plate of the pin which may be constructed of any suitable thin sheet stock.

The essential feature of my present invention is that the joint member is formed separate and independent of the front plate and also separate and independent from the eatchmember, that is, these members are not mounted on a single back plate as is usual in this style of pin. The joint memher 2 is formed from a piece of sheet stock and drawn up into a socket form rounding or hemispherical at its outer end 3, adapted to receive a ball-shaped head 4 of the pin stem 5, the outer wall of said member being slotted as at'6 for the passage of the shank and the wall 7 and 8 at the forward and rear ends respectively of this slot serve as a front and back stop respectively for the pin-stem.

An essential feature in the construction of my improved joint member is that a flange portion 9 is formed around the base thereof providing what is hereinafter termed a base plate which plate is adapted in the assem blingof the parts to fit down onto and be supported upon the inner face 10 of the front plate and the outer edge 11 of the front plate is then rolled over the edge of this flange or base plate, securely retaining the same in position therein. It is found in practice however, that by curling or turning1 up the edge 12 of this base plate from t e plane thereof that when the edge of the front plate is rolled thereover, this base plate is interlocked or firmly locked and securely held against any possibility of becoming loosened from its position in the back of the front plate. Then again, as illustrated in Fig. 6, the roll 11 at the point 13 just forward of the turned up portion 12 of the flange is carried downward below or beyond the turned up edge 12 forming an additional barrier or stop to prevent the member from moving forward from the end. of the body portion where it is supposed to be retained. Further the pressure of the roll at this point has a tendency to spring the turned up edge downward causing the natural resiliency of the metal to further assist in retaining the plate in position.

In forming a in of my improved construction of preclous metal, such as gold.

silveryplatinumy'or the likepit willbe'seen that the body' portion may be constructed of extremely thin material stiffened to the desired degree by the roll around the edge. Then by forming the joint member of sepa rate stock it mayalso be formed of precious metal but of a heavier stock in order to provide the strength required for such mem-' expensive'or objectionable fastening methods is effectually obviated. Another feature of this construction is that I entirely obvi ate the necessity of using the whole back plate to which the separate joint and catch members are ordinarily attached. By this construction and the elimination of this back plate, the entire pin including both the joint and catch members may be formed of" precious metal of theminimum thickness. at

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the 7 same time providing" the required strength of each part which is an advantage greatly to be desired the manufacture of .pins of this 7 character.

I claim V 1 IA spin having'an ornamentallfront plate an independent jointmember having an in.

tegral flange or base plate around the in- "ner end thereof, said base plate resting against the inner surface'of the front plate and having its edge turned slightly upward from its own plane "and the edge of said front plate being rolled over the said upturned edge of said basep'late' whereby the latter is interlocked 'with the roll of the 40 front plate near one end of the pin body to rigidly retain said member in position Intestimony whereof I affix my signa-:

'ture in presence of two witnesses.

CHARLES F. MARKHAM.

Witnesses: a V

HOWARD E. BARLow, E. I. OGDEN.

Gopies 01 this patent'may be obtained for five cents each; by addressing the Commissioner of Patents,

Washington, D. C. 

